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Diffstat (limited to 'sys/amd64/include/pmc_mdep.h')
| -rw-r--r-- | sys/amd64/include/pmc_mdep.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/sys/amd64/include/pmc_mdep.h b/sys/amd64/include/pmc_mdep.h new file mode 100644 index 000000000000..5c20d8473855 --- /dev/null +++ b/sys/amd64/include/pmc_mdep.h @@ -0,0 +1,135 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2003-2008 Joseph Koshy + * Copyright (c) 2007 The FreeBSD Foundation + * All rights reserved. + * + * Portions of this software were developed by A. Joseph Koshy under + * sponsorship from the FreeBSD Foundation and Google, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* Machine dependent interfaces */ + +#ifndef _MACHINE_PMC_MDEP_H +#define _MACHINE_PMC_MDEP_H 1 + +#ifdef _KERNEL +struct pmc_mdep; +#endif + +#include <dev/hwpmc/hwpmc_amd.h> +#include <dev/hwpmc/hwpmc_core.h> +#include <dev/hwpmc/hwpmc_tsc.h> +#include <dev/hwpmc/hwpmc_uncore.h> + +/* + * Intel processors implementing V2 and later of the Intel performance + * measurement architecture have PMCs of the following classes: TSC, + * IAF, IAP, UCF and UCP. + */ +#define PMC_MDEP_CLASS_INDEX_TSC 1 +#define PMC_MDEP_CLASS_INDEX_K8 2 +#define PMC_MDEP_CLASS_INDEX_P4 2 +#define PMC_MDEP_CLASS_INDEX_IAP 2 +#define PMC_MDEP_CLASS_INDEX_IAF 3 +#define PMC_MDEP_CLASS_INDEX_UCP 4 +#define PMC_MDEP_CLASS_INDEX_UCF 5 + +/* + * On the amd64 platform we support the following PMCs. + * + * TSC The timestamp counter + * K8 AMD Athlon64 and Opteron PMCs in 64 bit mode. + * PIV Intel P4/HTT and P4/EMT64 + * IAP Intel Core/Core2/Atom CPUs in 64 bits mode. + * IAF Intel fixed-function PMCs in Core2 and later CPUs. + * UCP Intel Uncore programmable PMCs. + * UCF Intel Uncore fixed-function PMCs. + */ + +union pmc_md_op_pmcallocate { + struct pmc_md_amd_op_pmcallocate pm_amd; + struct pmc_md_iap_op_pmcallocate pm_iap; + struct pmc_md_ucf_op_pmcallocate pm_ucf; + struct pmc_md_ucp_op_pmcallocate pm_ucp; + uint64_t __pad[4]; +}; + +/* Logging */ +#define PMCLOG_READADDR PMCLOG_READ64 +#define PMCLOG_EMITADDR PMCLOG_EMIT64 + +#ifdef _KERNEL + +union pmc_md_pmc { + struct pmc_md_amd_pmc pm_amd; + struct pmc_md_iaf_pmc pm_iaf; + struct pmc_md_iap_pmc pm_iap; + struct pmc_md_ucf_pmc pm_ucf; + struct pmc_md_ucp_pmc pm_ucp; +}; + +#define PMC_TRAPFRAME_TO_PC(TF) ((TF)->tf_rip) +#define PMC_TRAPFRAME_TO_FP(TF) ((TF)->tf_rbp) +#define PMC_TRAPFRAME_TO_USER_SP(TF) ((TF)->tf_rsp) +#define PMC_TRAPFRAME_TO_KERNEL_SP(TF) ((TF)->tf_rsp) + +#define PMC_AT_FUNCTION_PROLOGUE_PUSH_BP(I) \ + (((I) & 0xffffffff) == 0xe5894855) /* pushq %rbp; movq %rsp,%rbp */ +#define PMC_AT_FUNCTION_PROLOGUE_MOV_SP_BP(I) \ + (((I) & 0x00ffffff) == 0x00e58948) /* movq %rsp,%rbp */ +#define PMC_AT_FUNCTION_EPILOGUE_RET(I) \ + (((I) & 0xFF) == 0xC3) /* ret */ + +#define PMC_IN_TRAP_HANDLER(PC) \ + ((PC) >= (uintptr_t) start_exceptions && \ + (PC) < (uintptr_t) end_exceptions) + +#define PMC_IN_KERNEL_STACK(va) kstack_contains(curthread, (va), sizeof(va)) +#define PMC_IN_KERNEL(va) INKERNEL(va) +#define PMC_IN_USERSPACE(va) ((va) <= VM_MAXUSER_ADDRESS) + +/* Build a fake kernel trapframe from current instruction pointer. */ +#define PMC_FAKE_TRAPFRAME(TF) \ + do { \ + (TF)->tf_cs = 0; (TF)->tf_rflags = 0; \ + __asm __volatile("movq %%rbp,%0" : "=r" ((TF)->tf_rbp)); \ + __asm __volatile("movq %%rsp,%0" : "=r" ((TF)->tf_rsp)); \ + __asm __volatile("call 1f \n\t1: pop %0" : "=r"((TF)->tf_rip)); \ + } while (0) + +/* + * Prototypes + */ + +void start_exceptions(void), end_exceptions(void); + +struct pmc_mdep *pmc_amd_initialize(void); +void pmc_amd_finalize(struct pmc_mdep *_md); +struct pmc_mdep *pmc_intel_initialize(void); +void pmc_intel_finalize(struct pmc_mdep *_md); + +#endif /* _KERNEL */ +#endif /* _MACHINE_PMC_MDEP_H */ |